Investment Securities Schedule of Held-to-Maturity Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Schedule of Held-to-maturity Securities [Line Items]
Due within 1 year	$ 3,465
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value	3,481
Due after 1 but within 5 years	4,772
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value	4,826
Due after 5 but within 10 years	43,634
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value	43,558
Due after 10 years	3,801
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value	3,842
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Amortized Cost	55,672
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Fair Value	55,707
Debt Securities, Held-to-maturity, Maturity, without Single Maturity Date, Amortized Cost	498,553
Debt Securities, Held-to-maturity, Maturity, without Single Maturity Date, Fair Value	500,113
Debt Securities, Held-to-maturity	554,225	$ 361,844
Securities held to maturity, fair value	555,820	$ 369,851
US Government Agencies Residential Mortgage-backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity	105,600
Securities held to maturity, fair value	105,900
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity	392,900
Securities held to maturity, fair value	$ 394,300